Codex CLIOpenAI
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HeadroomGarm Tech
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Related Products
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About
Codex CLI is an open-source, lightweight coding agent that integrates directly into your terminal, designed to help developers write, edit, and understand code efficiently. By pairing with Codex CLI, developers can leverage the power of AI to streamline their workflow, get real-time code suggestions, and improve their coding accuracy, all from within their command line interface. It provides a seamless, accessible way to enhance coding productivity while staying in the environment developers are already comfortable with.
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About
Headroom is a menu bar app for macOS, Windows and Linux that cuts Claude Code and ChatGPT Codex token costs by ~50%, which can translate to up to 2x as much usage on the plan you already pay for.
It compresses the bulky tool output, logs and boilerplate your coding agent sends. Compression runs locally, before the request leaves your machine, so prompts and code stay private. Source code passes through untouched, and the originals stay available to the agent through a retrieval tool.
Typical coding sessions save 25-50% overall. Across 183 Claude Code users over one week, Headroom cut input tokens by 34% (measured) and output tokens by 33% (estimated).
Also included: a dashboard and activity feed with tokens and API-equivalent dollars saved, project learnings that turn past sessions into token-saving rules, and one-click add-ons (MarkItDown, Serena, Codebase Memory, Context7, Ponytail, Caveman).
7-day free trial, no credit card. Plans from $3/month.
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Codex CLI is ideal for developers and software engineers looking to enhance their coding efficiency, automate repetitive tasks, and improve code quality using AI-powered assistance directly within their command line environment
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Audience
Developers and engineering teams using Claude Code, ChatGPT Codex, or compatible local coding-agent workflows.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
Free
Open source
Free Version
Supported
Free Trial
Not Supported
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Pricing
$3/month
Pro is $3/month, billed annually ($36/year), or $4/month, billed monthly, for Claude Pro or ChatGPT Plus. Max x5 is $15/month, billed annually, or $20/month, billed monthly; Max x20 is $30/month, billed annually, or $40/month, billed monthly. Each plan includes a 7-day free trial with no credit card required. Team and Enterprise plans have custom pricing. A separate free, self-managed Headroom CLI is also available.
Free Version
Not Supported
Free Trial
Supported
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Reviews/
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Reviews/
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Pros & Cons from Real UsersPros
Cons
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationOpenAI
Founded: 2015
United States
openai.com
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Company InformationGarm Tech
Founded: 2026
Netherlands
extraheadroom.com
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
AionUi
Supported
AnswerGravity
Supported
Bash
Supported
ChatGPT Enterprise
Supported
Constellation
Supported
Elmo
Supported
Flori
Supported
Flottix
Supported
Fluq
Supported
GPT-5.1 Pro
Supported
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Integrations
AionUi
Not Supported
AnswerGravity
Not Supported
Bash
Not Supported
ChatGPT Enterprise
Not Supported
Constellation
Not Supported
Elmo
Not Supported
Flori
Not Supported
Flottix
Not Supported
Fluq
Not Supported
GPT-5.1 Pro
Not Supported
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